St. Paul Mayor Melvin Carter is heading to the Giant Wash laundry on Rice Street on Saturday to launch the St. Paul Public Library’s new “Wash and Learn” program, which installs “pop-up” library materials and digital classrooms in the laundromat. Librarians will work on site at Giant Wash a few hours per week to teach workplace skills, provide storytimes for children and answer questions. Programs will run to Oct. 6 2018.